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EP1022097A2 - Clé dynamométrique avec capteur d'angle sans référence externe - Google Patents

Clé dynamométrique avec capteur d'angle sans référence externe Download PDF

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Publication number
EP1022097A2
EP1022097A2 EP00200210A EP00200210A EP1022097A2 EP 1022097 A2 EP1022097 A2 EP 1022097A2 EP 00200210 A EP00200210 A EP 00200210A EP 00200210 A EP00200210 A EP 00200210A EP 1022097 A2 EP1022097 A2 EP 1022097A2
Authority
EP
European Patent Office
Prior art keywords
wrench
sensor
accordance
head
torque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00200210A
Other languages
German (de)
English (en)
Other versions
EP1022097A3 (fr
Inventor
Luigi Bareggi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlas Copco BLM SRL
Original Assignee
BLM SAS di L Bareggi and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BLM SAS di L Bareggi and Co filed Critical BLM SAS di L Bareggi and Co
Publication of EP1022097A2 publication Critical patent/EP1022097A2/fr
Publication of EP1022097A3 publication Critical patent/EP1022097A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1425—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool

Definitions

  • the present invention relates to a torque wrench of the type comprising an angle sensor.
  • a potentiometer or an encoder mounted on the axis of the wrench head generally equipped with a ratchet.
  • the angle is calculated with the potentiometer or the encoder by measuring rotation of the wrench head with respect to a an external reference point obtained by connecting the measurer shaft to an external reference by means of a flexible rod terminating with a magnet or an anchoring clamp.
  • the wrench head can be equipped only with a ratchet or a fixed panel, given the presence of the angle measurement member, coaxial with the handling panel, and it is not possible to use for example fork or polygonal wrenches or, even less, special attachments.
  • the general purpose of the present invention is to remedy the above mentioned shortcomings by making available a torque wrench permitting rotation angle measurement with no need for fixed references.
  • an electronic torque wrench comprising a head for connection to a member to be tightened, a first sensor for detecting the torque generated on the head upon moving the wrench, a second sensor for detecting angular rotation of the head, means of calculation to find from the sensor detection information considered significant and characterized in that the angular rotation sensor comprises a gyroscopic sensor.
  • FIG 1 shows a torque wrench indicated as a whole by reference number 10.
  • the wrench comprises a body 11 at one end of which there is a head 12 for connection to a member to be tightened (not shown) and, at the opposite end, a handling grip 13.
  • the head can be of any known type (fork, square, polygonal, et cetera) with or without ratchet and any size.
  • the head is merely a mechanical member of the wrench. It can thus be changeable with a coupling and selected from a plurality 12a of different heads depending on requirements.
  • a torque sensor 14 In the connection between the grip and the head there is a torque sensor 14.
  • This sensor is advantageously accomplished by means of a bending cell made up of a pair of extensometric bridges 15 spaced along the wrench axis and connected in such a manner as to produce a signal differential between the innermost bridge and the outermost bridge and thus obtain a signal proportionate to the torque applied on the grip independent of its application point.
  • the cell 14 bears at its external end the coupling seat of the interchangeable head and is rigidly fastened in a tubular bar 16 which joins with the body 11 to provide protection for the zone of the extensometers.
  • the body 11 contains a gyroscopic sensor 17 for measurement of the wrench rotation angle.
  • a keyboard 20 permits setting wrench operation, inputting of parameters et cetera in combination with the information shown on the display.
  • the display can also show graphics in the various types of use and menus with icons to make use simple and intuitive by operators even not experts.
  • LEDs 21 for visual signaling to the operator based on the result of a previously selected work method. For example lighting of a LED could warn of reaching a preset tightening value.
  • the wrench is equipped with power supply batteries which are advantageously contained in the grip 13 and can be recharged through an outlet 22 for connection to an external battery charger (not shown).
  • the grip could have a fast closing plug for battery change.
  • Another electrical outlet 23 permits exchange of data between the wrench and external computerized units (not shown) such as for example a personal computer.
  • FIG 2 shows a block diagram of the wrench.
  • the gyroscopic sensor 17 is accomplished in the form of an optical gyroscope which was found advantageous due to the absence of moving parts, low power consumption, high precision and robustness.
  • the optical gyroscope is based on the known 'Segnac' effect.
  • the optical gyroscope comprises an optical fiber coil 24, a piezoelectric ceramic phase modulator 25, a coupler 26 which optically couples the ends of the optical fiber together to obtain a single fiber which traverses a polarizer 27 connected at its other end to another optical coupler 28 to which are connected a light source 29 and a photoelectric sensor 30.
  • the signal 32 is sent to a microprocessor circuit 33 which also receives the signal from the torque sensor 14.
  • the circuit 33 processes the signal received and shows the result of the processing on the display 19 and if necessary sends it onto the connector 22.
  • the circuit 33 also receives the command signals produced by the keyboard 20.
  • the microprocessor circuit 33 has a structure known in itself and therefore will not be further described nor shown.
  • the circuit 33 samples the signal 32 at predetermined time intervals T.
  • the value sampled represents the instantaneous wrench rotation velocity. If the value is zero the wrench has not moved since the last sampling. Otherwise the circuit calculates the integral of the velocity and adds it to the instantaneous velocity.
  • K is a function of sampling frequency, corresponding voltage-degrees per second of the signal 32, and corresponding tension-points of the analog to digital converter used in the acquisition.
  • Measurement drift values within the test duration range are extremely small and do not influence angle measurement precision.
  • the angle measurement process as described above is performed in parallel with the torque value acquisition performed by known methods.
  • the circuit 33 employs the angle and torque values in a virtually known manner to supply desired functions and information.
  • the gyroscope supplies an absolute rotation measurement in any operational plane.
  • use of the gyroscope together with use of extensometers which measure bending permits providing interchangeable heads with ratchets, forks, polygonal, special et cetera without limit.
  • the wrench could be made with the electronic part separate and connected to the actual wrench through a cable for example to have a lighter wrench or to share a single electronic unit among several wrenches with different measurement capability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
EP00200210A 1999-01-22 2000-01-20 Clé dynamométrique avec capteur d'angle sans référence externe Withdrawn EP1022097A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI990111 1999-01-22
IT1999MI000111A IT1308592B1 (it) 1999-01-22 1999-01-22 Chave dinamometrica con sensore di angolo senza riferimento esterno

Publications (2)

Publication Number Publication Date
EP1022097A2 true EP1022097A2 (fr) 2000-07-26
EP1022097A3 EP1022097A3 (fr) 2003-01-22

Family

ID=11381577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00200210A Withdrawn EP1022097A3 (fr) 1999-01-22 2000-01-20 Clé dynamométrique avec capteur d'angle sans référence externe

Country Status (2)

Country Link
EP (1) EP1022097A3 (fr)
IT (1) IT1308592B1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003041914A2 (fr) * 2001-11-14 2003-05-22 Snap-On Technologies, Inc. Cle dynamometrique electronique
FR2843326A1 (fr) * 2002-08-12 2004-02-13 One Too Cle dynamometrique
EP1462220A1 (fr) * 2003-03-26 2004-09-29 Snecma Moteurs Clé à serrage contrôlé
WO2007062229A1 (fr) * 2005-11-28 2007-05-31 Snap-On Incorporated Instrument d’angle et couple
DE102007055028A1 (de) * 2007-11-17 2009-05-20 Richard Abr. Herder Kg Winkelmeßeinrichtung
EP1962064A3 (fr) * 2007-02-22 2009-09-23 Eduard Wille GmbH & Co KG Dispositif de mesure d'angle
WO2009136840A1 (fr) 2008-05-08 2009-11-12 Atlas Copco Tools Ab Procédé et dispositif de serrage de raccords
CN103185651A (zh) * 2011-12-31 2013-07-03 信义汽车玻璃(深圳)有限公司 一种汽车玻璃镜座扭矩检测装置以及检测方法
DE102008022466B4 (de) * 2007-05-07 2014-02-20 Pax Ag Vorrichtung zur Prüfung einer Gängigkeit eines Antriebselementes
EP2712709A1 (fr) * 2012-10-01 2014-04-02 One Too Outil de serrage et son procédé
US8886492B2 (en) 2011-09-23 2014-11-11 Brown Line Metal Works, Llc Digital angle meter
TWI464040B (zh) * 2012-08-27 2014-12-11 Kabo Tool Co Around the display of electronic torque hand tools
US8918292B2 (en) 2011-09-23 2014-12-23 Brown Line Metalworks, Llc Digital angle meter
WO2018036665A1 (fr) * 2016-08-25 2018-03-01 Man Diesel & Turbo Se Adaptateur de clé dynamométrique
IT201900024730A1 (it) * 2019-12-19 2021-06-19 Atlas Copco Ind Technique Ab Attrezzo di serraggio con controllo della coppia di serraggio.
WO2022082031A1 (fr) * 2020-10-15 2022-04-21 Enerpac Tool Group Corp. Système de mesure de charge pour clé dynamométrique hydraulique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538741A1 (fr) * 1982-12-30 1984-07-06 Facom Cle dynamometrique a extensometres electriques
US4976133A (en) * 1988-12-02 1990-12-11 Cdi Consolidated Devices Inc Instrument for adjusting and calibrating torque wrenches
DE4243317A1 (en) * 1992-12-21 1993-06-09 Edgar Von Dipl.-Ing. 6602 Dudweiler De Hinueber Angle control method for automatic screwdriver - using inertial angular rate sensor built into rotating shaft of insertion tool, and e.g. Sagnac effect rotation pick=up
US5476014A (en) * 1992-12-21 1995-12-19 Mercedes-Benz Ag Process and a device for the rotation-angle-monitored tightening or loosening of screw connections
US5589644A (en) * 1994-12-01 1996-12-31 Snap-On Technologies, Inc. Torque-angle wrench
DE29615123U1 (de) * 1996-08-30 1998-01-08 Eduard Wille Gmbh & Co, 42349 Wuppertal Elektronischer Meßschlüssel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538741A1 (fr) * 1982-12-30 1984-07-06 Facom Cle dynamometrique a extensometres electriques
US4976133A (en) * 1988-12-02 1990-12-11 Cdi Consolidated Devices Inc Instrument for adjusting and calibrating torque wrenches
DE4243317A1 (en) * 1992-12-21 1993-06-09 Edgar Von Dipl.-Ing. 6602 Dudweiler De Hinueber Angle control method for automatic screwdriver - using inertial angular rate sensor built into rotating shaft of insertion tool, and e.g. Sagnac effect rotation pick=up
US5476014A (en) * 1992-12-21 1995-12-19 Mercedes-Benz Ag Process and a device for the rotation-angle-monitored tightening or loosening of screw connections
US5589644A (en) * 1994-12-01 1996-12-31 Snap-On Technologies, Inc. Torque-angle wrench
DE29615123U1 (de) * 1996-08-30 1998-01-08 Eduard Wille Gmbh & Co, 42349 Wuppertal Elektronischer Meßschlüssel

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6968759B2 (en) 2001-11-14 2005-11-29 Snap-On Incorporated Electronic torque wrench
WO2003041914A3 (fr) * 2001-11-14 2003-11-13 Snap On Tech Inc Cle dynamometrique electronique
WO2003041914A2 (fr) * 2001-11-14 2003-05-22 Snap-On Technologies, Inc. Cle dynamometrique electronique
US6981436B2 (en) 2001-11-14 2006-01-03 Snap-On Incorporated Electronic torque wrench
EP1389507A1 (fr) * 2002-08-12 2004-02-18 2-Pf S.A.R.L. Cle dynamometrique
FR2843326A1 (fr) * 2002-08-12 2004-02-13 One Too Cle dynamometrique
FR2852879A1 (fr) * 2003-03-26 2004-10-01 Snecma Moteurs Cle a serrage controle
EP1462220A1 (fr) * 2003-03-26 2004-09-29 Snecma Moteurs Clé à serrage contrôlé
US7036407B2 (en) 2003-03-26 2006-05-02 Snecma Moteurs Wrench with controlled tightening
AU2006318399B2 (en) * 2005-11-28 2010-08-19 Snap-On Incorporated Torque-angle instrument
WO2007062229A1 (fr) * 2005-11-28 2007-05-31 Snap-On Incorporated Instrument d’angle et couple
GB2447161A (en) * 2005-11-28 2008-09-03 Snap On Tools Corp Torque-angle instrument
GB2447161B (en) * 2005-11-28 2011-07-06 Snap On Tools Corp Torque-angle instrument
US7565844B2 (en) 2005-11-28 2009-07-28 Snap-On Incorporated Torque-angle instrument
US7841100B2 (en) * 2007-02-22 2010-11-30 Eduard Wille Gmbh & Co Kg Angle measuring device
EP1962064A3 (fr) * 2007-02-22 2009-09-23 Eduard Wille GmbH & Co KG Dispositif de mesure d'angle
CN101251364B (zh) * 2007-02-22 2016-12-28 斯达威力艾都威乐有限两合公司 角度测量装置
DE102008022466B4 (de) * 2007-05-07 2014-02-20 Pax Ag Vorrichtung zur Prüfung einer Gängigkeit eines Antriebselementes
DE102007055028A1 (de) * 2007-11-17 2009-05-20 Richard Abr. Herder Kg Winkelmeßeinrichtung
WO2009136840A1 (fr) 2008-05-08 2009-11-12 Atlas Copco Tools Ab Procédé et dispositif de serrage de raccords
US8918292B2 (en) 2011-09-23 2014-12-23 Brown Line Metalworks, Llc Digital angle meter
US8886492B2 (en) 2011-09-23 2014-11-11 Brown Line Metal Works, Llc Digital angle meter
CN103185651A (zh) * 2011-12-31 2013-07-03 信义汽车玻璃(深圳)有限公司 一种汽车玻璃镜座扭矩检测装置以及检测方法
CN103185651B (zh) * 2011-12-31 2015-04-22 信义汽车玻璃(深圳)有限公司 一种汽车玻璃镜座扭矩检测装置以及检测方法
TWI464040B (zh) * 2012-08-27 2014-12-11 Kabo Tool Co Around the display of electronic torque hand tools
FR2996155A1 (fr) * 2012-10-01 2014-04-04 One Too Outil de serrage et son procede
EP2712709A1 (fr) * 2012-10-01 2014-04-02 One Too Outil de serrage et son procédé
WO2018036665A1 (fr) * 2016-08-25 2018-03-01 Man Diesel & Turbo Se Adaptateur de clé dynamométrique
IT201900024730A1 (it) * 2019-12-19 2021-06-19 Atlas Copco Ind Technique Ab Attrezzo di serraggio con controllo della coppia di serraggio.
WO2021124187A1 (fr) * 2019-12-19 2021-06-24 Atlas Copco Industrial Technique Ab Outil de serrage à commande de couple de serrage
WO2022082031A1 (fr) * 2020-10-15 2022-04-21 Enerpac Tool Group Corp. Système de mesure de charge pour clé dynamométrique hydraulique
US12246418B2 (en) 2020-10-15 2025-03-11 Enerpac Tool Group Corp. Load measurement system for hydraulic torque wrench

Also Published As

Publication number Publication date
EP1022097A3 (fr) 2003-01-22
IT1308592B1 (it) 2002-01-08
ITMI990111A1 (it) 2000-07-22

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